diff --git a/src/backend.rs b/src/backend.rs
index d085146b483..db3e9046403 100644
--- a/src/backend.rs
+++ b/src/backend.rs
@@ -21,6 +21,7 @@ use crate::{
 ///
 /// This ID can refer to the core backend provided by the Trussed crate, or to a custom backend
 /// defined by the runner.  The custom ID type is defined by [`Dispatch::BackendId`][].
+#[derive(Debug, Clone)]
 pub enum BackendId<I> {
     Core,
     Custom(I),